Loose-leaf book.



tid

RALPH G. WHITLOCK, OF LOSANGELES, CALIFORNIA.

LOOSE-LEAF BOOK.

mensen..

Application led August 30, 1917.

To all w/wm t 'may concern.'

Be it known that l, RALPH G. WHrrLooK, a citizen of the United States,residing at the city of Los Angeles, State of California, have inventednew and useful Improvements in Loose-Leaf Books, of which the followingis a specification.

My invention relates to improvements in the construction of the backframe for a loose leaf book and in the manner of securing the same tothe case or cover; and the object thereof is to provide a cheap andeflicient back frame that can be quickly attached to or detached fromthe case or cover.

In the drawings forming a part of this application Figure 1 is a frontelevation of the back frame detached from the case with parts brokenaway.

Fig. 2 is an end elevation of the opening lever end.

Fig. 3 is a back elevation of the opening lever end of the cover backplate.

Fig. 4: is a back elevation of the other end of said plate.

Fig. y5 is an enlarged section on the line 5-5 of Fig. 3.

lFig. 6 is an enlarged section on the line 66 of Fig. 4.

Fig. 7 is an enlarged section taken on the line 7-7 of Fig. 1.

Referring to the drawings, 10 is a thin metal plate which. forms aportion of the back of lthe cover and is bound in the cover when it ismanufactured. This plate I call the `cover back plate. Near each sideand near the ends a portion of plate 10 is bent upwardly to form curvedsecuring hooks 11 which engage the hooks of the back frame securingplates. The central portions of these upwardly bent portions project bevond hooks 11 yand form guide and stop lugs 13 which engage the sidemembers 15 ot 'the back frame when the ring members 16 are fully openedto receive or remove leaves not shown, and guide the side members backto position when the ring members are closed. The back frame is composedof the side members 15 whose ends are bent at right an les to the bodyand flattened and pierce and pivotally con* nected by pintle rod 17. Thering members are rigidly connected to the side members and their Shanksextend upwardly and are Specification of Letters Patent.

Patented Jan. 14, 1919..

Serial No. 189,030.

pierced, and pintle rod 17 passes through these shanks. It. desired theShanks could be omitted, but l prefer their use as they give additionalstrength to the back frame. The ring members are divided above thepintle rod as shown at 18. Spring wire 19 is coiled around the pintlerod and the ends bear against the side members and normally hold thering members closed. The back frame securing plates 20 have their sidesbent down and inwardly to form hooks 21 which engage hooks 11 oit' theback plate 10' and hold the back frame secured to the back plate. Thecentral portions of the ends of plates 20 are bent downwardly to formstops 22 `which also limit the inward movement of the side members whenthe ring members are opened. At one end, preferably the lever openingend, the cover back plate has the central portion formed into a lockhook 23 which gives as the hooks of the back frame plate are pushed intothe hooks of the cover back plate and snaps up behind one of stops 22 tohold the parts from separating as best shown in Fig. 7. If it should bedesired to remove the back frame the lock hook can be depressed and theback fra-me slid out. Secured upon rod 17 near one end thereof is atulcrum bar 24 on which bar is pivotally mounted an L-shaped lever 25 bymeans of which the body members may be caused to approach each other,thereby opening the ring members. In Fig. 5 l show a fragment of thecover of which 26 is the outer member and 27 is the lining.

By this construction it will be observed, I am able to manufacture thecover and back frame separately and can quickly unite the same and whendesired can easily disunite them.

Having described my invention l claim:

1. The combination of a cover, having a metal back plate forming a partthereof, said back plate having hooks projecting upwardly from its innerface beyond the lining, said hooks being at the sides .of said plate andextending upwardly and inwardly and then outwardly; with a back framehaving hooks to co-act with the hooks et the yrback plate to unite thecover and back frame.

2. In a loose leaf book, a cover comprising an outer member; a liningmember; a metal back plate between said members, said wardly andinwardly and then outwardly;l

in combination With a back frame having attaching plates at each endthereof, saidv-`^ plates having hooks eo-aeting With the hooks of theback plate to secure the parts have'hereuntosubscribed my name this 25th20 together. 3. In a loose leaf book, a cover having a metal back plateforming a part thereof,

said back plate having an upwardly pro Jeeting look hook, in Combinationwith a back frame havin" seeurinO lates )rovided with downwardlyextending stops, one of 15 -s-aid stops being adapted to be engaged bythe look hook to keep the parts from separating.

In Witness Ithat I elann the `foregoing I dayrof August 1917.

RALPH G. VVIIITLOCK.

Copies oi' this patent may be obtained for ve cents each, by'addressingth Commissioner of Patents,

Washington, D. 0.2

